Shock-absorber.



A. STOWASSER.

SHOCK ABSORBER.

APPLICATION FILED JUNE I0. 1916.

Patented Feb. 2?, 1917.

2 SHEETS-SHEET 1.

' wi/tmeoow A. STOWASSER.

SHOCK ABSORBER.

I, APPLICATION HLED JUNE 10, 191$.

Patented Eebf27, 1917.

2 SHEETSSHEET 2.

wiibmeocap STAT S- mamacame;

.AN'rHoNY strowassnn, or ILWAUKE isconsin. 1

sHo'cK ABsoRBEn.

To all whom it'mag concern:

Be it known that I, Arv'rnoxr S'rowAssnn,

a citizen of'the- United States, residing at the city of lVlil-waukee, county of Milwaukee,

and State of YV-isconsim-have invented new and useful Improvements in Shock Absorb= ers, of w hichvthe following is a spepification;

My invention relates to improvements in shock absorbers.

In a former P atent No. --1,169,578, dated- Januaryjs 25, 1916, I have shown and. described a shock absorber of the disclosed in this application, andrthe object of the present inventionis-.to simplify the ,lnechanism, reduce the cost of construction and increase arranged asxto secure a counteraetiv'ee'fiec't and a. distribution of. the energy produced, by the shock, which distribution will-beiaccoinplishedbothin direction," and time,

whereby the force of the shock 'will be alfvide'd near its respective ends witha -set of most fcompletely neutralized- Infthe drawings q L l F igure 1 is a front elevation of. my 1mgeneral type the efficiency of such shock ab-i sorbersjfby employing-a system oflevers so.

Specification of Letters Patent.

, Applies/titan filed June 1 0, 1916. Serial no. 162,316.

" 15. These studs'15'carried by the resp'ect-ive i proved shock absorber applied to the axle of I a niotor driven vehicle, one of the main shock absorbing springs and its inclosing housing" being Fig. 2-is a plan view of the same; Fig. 3-is a sectional view drawn on 3-3 ofFig. 1. 4

Like parts areidentified by the same ref erence characters throughout the several views.

The

illustrated invertical section.

line

upwardly projecting sleeve 12, the upper end of a-nd-above the axle, and project: in war'd ly v outer ends' are con line and carries a cross piece 28, around" Patent ed Feb 2?, is'i zi. 1

the rap plate 7, and also through thef top wall or head 10 of the casing &, the upper vend of the rod or stein ,8 having ahead 11. Each of the cap plates T is provided with an of which is socke't'edin ahead piece 1 which serves as an enlarged collar, enclrclin'g th'e rod 8, and hav ng a pro ecting pivot Stu-d1 collar l1eads 13, are located on opp'g'isite sides 1 a towardeach other and constitute resiliently F yielding t'ul'crums' for a: primary lever havi'ng a'central fulcrum bar 16, provided with end sockets to receive the -pi\-'ot st-udsf1 Arm s' 18 project longitudinally of the axle o1 I I on .one'side of the fulcrum bar 16, andtheii nected by a cross bolt 20 havinga spacing sleeve 21 mountedthere-1'; on between the arms 18 and adaptedto cs-1:. cillatilpoil the bolt. L

The upper Ieljniping member 5 'is pro-i "upwardly projecting fulcrum posts 25 with which a lever 26 is 'pivotally connected. One end 'ofthis lever is connected with one' of the sleeves. 21. The other end projects:'--' in the direction of the vertical sleeve' 12"and downwardly toward the axle along'a' curved-" whicha spring 'fzil is coiled. ()ne'end ot this 35 "spring extends downwardlytoward the axle' main spring 1 supports-the body of the vehicle from the axle 2 -in the ordinary manner, except that-my improved shock absorber 1s interposed and employed as a means for connecting includes a set or pair of helicallycoiled shock absorbing springs 3, each inclosecl withinfa cylindrical casing pair of casings are rigidly-connected with a set of clamping members 5, which are adapt ed to embrace the axle and to support the spring inc-losing casings with the springs in a vertical position, one on each side of the axle. The ends of the springs 3 are provided with base and cap plates (3 and 7 respectively, The lower or base plate 6' is secured to a vertically disposed rod 8 which projects upwardly hrough an aperture 9 in the ends of "the main I Each shock absorber 4. The set or post or set of posts 25;

and is coiledaround a cross bolt 30 extend ing transversely of the axle, througlrth'e .The other 'end 3l ofthe spring 29 extends alongthe under sid 9o of lever 26' past the fulcrum pin or bolt "-2 and tends to raise the outer endof 'saidfleven 26, thereby providing a resilientsupport forf the sleeve 21, cross bolt 20 and the outer ends of the arms 18.1 On the other side ofthe fulcrum bar 16 from"thatoccupiedby the arms 18, the bar 16 is provided with 'an-'-'-' other set-of arms 40, The alio ve'mentioned primar lever comprises the fulcrum ba'rlfl with its projecting arms 18 on one side and arms 40 on the other side.

The arms 40 of the primary lever each provide a yielding support for a transverse bolt ell, through which a yielding connection is made between the main spring 1 and a cross head 50 supported by the collars 13. A relative movement oi the connected end of the spring 1 may be transmitted to this 3O 'and 'lclainping-bracltet posts ;l' 0, together cross head 50 through'lei 'erii l, (preferably a forked or fourarmed lever), bellcrank; arms transverse bolts or hell crank fulcrum pins l1, arn'is'5(l,-links 57 and arms 58,

transmitted to the elbow cra nk'wi'ill be further modified in lever 54:, the inner end f of which is adapted to swing upwardly the-latter being-rigidly connectedwit-li cross against the tension of spring 72. This -h Hill 50, one at each end thereof. One set of these"connections is provided on each side oftlie extremity of the spring 1 and leads to the respective ends of c'ross head 50... Lever fil-is for convenience in description termed asecoiidary lever and is connected with the end of tlie springby a bolt (30. Each-bell crank arin is-coiinect-ed with lever :Tlnear bolt 60 by a pivot bolt 61. Each bell crank arm 56 rigidly secured to transverse bell crank fulcrum bolt 4:1 to which arm is also-rigidly secured. The bolt 41, however, is free to rotate in its bearing in armAlOI upwardly and thereby avoid'violent lifting with; a fulcrum for said lever adjacent to Connecting bolts '61 serve as fulcrums for levers-54, the short arms-of the lever being connected with the extremity of the spring at (i0, and the long arms being extended inwardly between the arms l0. ,The lever arms are rigidly connected with each other'by a cross bar 65. The inner ends 0r-arnis of this lever 54: are connected by across bolt 66 which is resiliently supported bya spacing sleeve 68, lever (39,clhmping bracket posts 70, pivot bolt, 71 and a spring172. Lever 69 with-the associated parts, are similar in structure and arrangement to the'labove de-- scribed lever 26; and-posts 25. The spring 72 resiliently supports cross "bolt-'66 by means of lever 6?,bi'it owing toltlie fact that cross bolt 66 is at a considerable distance from the fulcrum bolt. 61 upon which the leiferor. levers 54: oscillate, whereas the connection with thespring 1 is in close proxin iity to the fulcrum bolt 61,. it is obvious that a comparatively light spring, suchas the spring 72, may be utilized to resist swinging movements oflev'er 54. v Briefl reviewing the operation, it will be observe that any shock or rebounding action which tends to cause a relative approach of spring 1 and-axle 2, will be absorbed as follows: I

A relative upward movement of axle 2 cannot be transmitted through rods 8 for these are free to slide upwardly through the associated parts. Motion imparted to the springs 3 will be transmitted by them through the cap plates 7 and sleeve 12 to the primary lever. This lever will lift the fulcram pins or bolts 41 of tlie'elbow' cranks but the force will be partially absorbed by the springs 20 which prevent-the connected ends of the arms 18 from lifting. If bolts- 20 serve as a' fixed fulcrum, the motion transmitted to the elbow cranks would of course? be amplified, but owing to the fact that bolt 20 is spring supported. it is a(.laptcd to yield acting: dowii'ivard-'pull upon tween the primary and the secondary levers respect vely and the veh cle axle, and con 2. The coiiibination"witha .veliicle axle,

. connected. 1

connection. betweenthe primary lever and leaves a comparatively lightupward pressure to be. transmitted to the main spring 1 Even this will be largely neutralized by the motion transmitted to cross head 50 from the collars 13 and l'roni this cross head '75 t'lHQHglfl the arms to oscillate the elbow cranks; wliereliy their oiiter arms tend to swing doivnwardhfi and impart a. co uI iter-'-.

bolts 61 and 4 lever ;i-l;

l cla'iiu- -l. The combination will: a vehicle axle, ota prinia'ryflever, a resiliently yielding f'ulcruin supportingsaid .lcvei' froni lhe' a-Xle. a bell crank having a fulcrum pivotal i connection with one-arm of the primary lever connecting said spring with one iii'iii of the bell crank. resilient connections benection's-between one arlfr of the bell cranlc and there'sihently y elding fulcrum of the pr imary' lever.

of a set of coiled springs supported'therefroi ii, fulcrum heads SllpPUltGfl. by said, --s .prin,e:s,a primary lever havnigitsfcentral portion pivotally connected witldsaid .fulcruni ,heads, a resilient connection between one arm of said lever and the vehicle axle, a main bodysupporting spring, a secondary lever connected with llie spring and having a fulcrumsupported from the primary lever i at the opposite end of the llltt(%l,fl'0llltl1flt which is resiliently connected with the axle, and resilient connections between the sec-- ondary lever and the axle on the opposite side/of the secondary lever fulcrunifrom that to which the body supporting springsis,

ion

The combination with a vehicle axle, of a primary lever, a-fulcrumttherefor;resiliently. supported from the axle. a 'i-esihent the axle-adapted to oppose swinging-nioveinents of said lever, a main lOOClYSIIDPOItlIIg spring, a lever pivotally connected therewith, a fulcrum for'said lever adiacent to its connectionwith the spring, and a sup port for said fulcrum. carried'by the primary lever. 4; The combination with a vehicle axle, of a primary lever, a fulcrum there-for re; siliently supported from the axle a resilient connection between the 'irinia'i'y lever and the axle adapted to oppose swinging move- -ments of said lever. a main body supporling spring, a lever pivotally connected there- BEST AVAILABLE COF v comprising a bell crank pivotally connected with the yn-im'ary lever and having link connectlon \vlth the fulcrum head of the pnmary lever. substantmlly as clescrlbecl.

In testimony whereof I ufiix my signature 1n the presence of two \v1tnesses.

ANTHONY STOWASSER.

Witnesses: Lhvrumr'r G. H ELER, IRMA D. BREMER. r 

